Finding the Fourth Proportional to 12,429.01, 18,618.33 and 5,756.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.01 : 18,618.33 = 5,756.09 : x
2. Step 2: Convert to fraction form
   12,429.01/18,618.33 = 5,756.09/x
3. Step 3: Cross multiply
   12,429.01x = 18,618.33 × 5,756.09
4. Step 4: Simplify right side
   12,429.01x = 107,168,783.13
5. Step 5: Solve for x
   x = 107,168,783.13/12,429.01
6. Step 6: Final answer
   x = 8,622.47